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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Pillet, Flavien Anton Leberre, Véronique Séverac, Marjorie Bouet, Jean-Yves Sanchez, Aurore Trévisiol, Emmanuelle Formosa, Cécile |
| Description | Country affiliation: France Author Affiliation: Pillet F ( Université de Toulouse) |
| Abstract | Surface Plasmon Resonance imaging (SPRi) is a label free technique typically used to follow biomolecular interactions in real time. SPRi offers the possibility to simultaneously investigate numerous interactions and is dedicated to high throughput analysis. However, precise determination of binding constants between partners is not highly reliable. We report here a dendrimer functionalization of gold surface that significantly improves selectivity of the detection of protein-DNA interactions. We showed that amino-gold surface functionalization with phosphorus dendrimers of fourth generation (G4) allowed complete coverage of the gold surface and the increase of the surface roughness. We optimized the conditions for DNA probe deposition to allow accurate detection of a well-known protein-DNA interaction involved in bacterial chromosome segregation. Using this G4-functionalized surface, the specificity of the SPRi response was significantly improved allowing discrimination between protein and DNA interactions of different strengths. Kinetic constants similar to those obtained with other techniques currently used in molecular biology were only obtained with the G4 dendrimer functionalized surface. This study demonstrated the benefit of using dendrimeric surfaces for sensitive high throughput SPRi analysis. |
| ISSN | 09565663 |
| Volume Number | 43 |
| e-ISSN | 18734235 |
| Journal | Biosensors and Bioelectronics |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-05-15 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Biosensing Techniques Instrumentation Dna-binding Proteins Chemistry Dna Dendrimers Gold Protein Interaction Mapping Surface Plasmon Resonance Equipment Design Equipment Failure Analysis Protein Binding Surface Properties Journal Article Research Support, Non-u.s. Gov't Discipline Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology Medicine Biophysics Biomedical Engineering Biotechnology Electrochemistry |
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